cppexp.c (CPP_UMINUS, CPP_UPLUS): New.
* cppexp.c (CPP_UMINUS, CPP_UPLUS): New. (HAVE_NO_R_OPERAND): Remove. (HAVE_VALUE): Remove. (op_to_prio): Update. (UNARY): Don't alter flags. (_cpp_parse_expr): want_value used to indicate whether a number or unary operator is expected next. Distinguish unary and binary +/-. (op_as_text): Update for unary operators. From-SVN: r52780
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